Knepper's character - like most other new ones - are being kept under wraps.

David Patrick Kelly, who played Jerry Horne on the original Twin Peaks, is also onboard the sequel series.

In addition to playing T-bag on TV's Prison Break, Knepper is known for roles in Cult, Arrow, Heroes and Carnivale; film wise, he's been in such movies as The Transporter 3, Hitman and the upcoming The Hunger Games: Mockingjay – Part 2.